I see two energies here with the water and the air cards, so the high priestess is one of them but this person is someone who can change with the wind, their okay one day or hour and not the next, they can get very emotional over things at different times unexpectedly.....so maybe its this what's caused the break up.
The 2 air cards following is the other person....so this could be someone who has been with this person but the person has very crazy dysfunctional problems, its not been a very healthy r'ship with a lot of frustration and limitations.
Also air and water don't gel well, its a sort of situation like putting up with them but also at the same time feeling dissatisfied by things, a forced together sort of feeling, doing things for the other person but not what you actually want to do, leading to resentment....etc.
The situation just didn't seem very compatible which then caused the break up.....the person ahd basically had enough of the emotional ups and downs and not feeling any sort of satisfaction from the r'ship.